Weather you know it's coming or it's come as a surprise, the first question is always "What's this going to cost?" The cost of a new septic system can average between $12,000 - $45,000.  A gravity system is the best and cheapest to install.  Above grade systems; like an at-grade bed or elevated sand mound, are the most expensive.   There are many factors that go into the cost of a septic … [Read more...]